[Bug rtl-optimization/104777] [9/10/11/12 Regression] gcc crashes while compiling a custom coroutine library sample

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104777

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|8.5.0                       |8.1.0, 8.3.0
      Known to fail|                            |8.4.0, 8.5.0

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note loop being a thread_local (__thread) is important here to get the crash.
Further reduced testcase:
int savestate_r;
int savestate_ssb;
extern void abort();
__thread int  loop;
void f (void)
{
  int savestate_r0_5;
  int savestate_r1_6;

  __asm__("" : "=m" (savestate_ssb), "=r" (savestate_r));
  savestate_r0_5 = savestate_r;
  if (savestate_r0_5 == 0)
  {
    __asm__ __volatile__("" :  : "m" (loop));
    abort ();
  }

  __asm__("" : "=m" (savestate_ssb), "=r" (savestate_r));
  savestate_r1_6 = savestate_r;
  if (savestate_r1_6 != 0)
    return;

  __asm__ __volatile__("" :  : "m" (loop));
  abort ();

}